<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>vue.directive自定义指令</title>
    <script type="text/javascript" src="../assets/js/vue.js"></script>
</head>
<body>
    <h1>vue.directive自定义指令</h1>
    <hr>
    <div id="app">
        <div v-px="color">{{num}}</div>
        <button @click="add">增加</button>
    </div>
    <p>
        <button onclick="unbind()">解绑</button>
    </p>

    <script type="text/javascript">
        function unbind(){
            app.$destroy();
        }
        // Vue.directive("px",function(el,binding){
        //     console.log(el);
        //     console.log(binding);
        //     console.log(binding.name);
        //     el.style="color:"+binding.value;
        // })

        Vue.directive("px",{
                bind:function(el,binding){//被绑定
                    console.log('1 - bind');
                    el.style="color:"+binding.value;
                },
                inserted:function(){//绑定到节点
                    console.log('2 - inserted');
                },
                update:function(){//组件更新
                    console.log('3 - update');
                },
                componentUpdated:function(){//组件更新完成
                    console.log('4 - componentUpdated');
                },
                unbind:function(){//解绑
                    console.log('5 - unbind');
                }
        })

        var app = new Vue({
            el:'#app',
            data:{
                num:10,
                color:'red'
            },
            methods:{
                add:function(){
                    this.num++
                }
            }

        })
    </script>
</body>
</html>